Can I pass the thank-you letter to the judge through the window?

Of course. Thank-you letters to judges can be handed in through the window, and the court will have a lawsuit service center window. The thank-you letter to the judge can be handed in through the window of the litigation service center. A judge refers to a judge who is produced in accordance with the procedures prescribed by law and exercises state judicial power in judicial organs (usually courts) according to law, and is the executor of judicial power.